FR2686102A1 - DEVICE FOR THE TREATMENT, IN PARTICULAR THE DYEING OF TEXTILE PIECES, SO AS TO GUARANTEE THE IMPROVED DIMENSIONAL STABILITY OF THESE PIECES. - Google Patents

Abstract

a) Device for the treatment in particular the dyeing of textile parts so as to guarantee better dimensional stability of these parts. b) Device characterized in that the drive means (7) are constituted, in the direction of rotation A of the loop (1), by a suction tube with a venturi effect (8) controlling the circulation of the textile pieces to a first speed, and by paddle rotors (9, 9 ') controlling the circulation of the textile pieces at a second speed, lower than the first, and cooperating where appropriate with transverse jets (14) the suction tube and the paddle rotors (8, 9, 9 ') being separated by an accumulation chamber (12) of the loop (1).

Description

"Device for the treatment, in particular, the dyeing of textile pieces of

  The present invention relates to a device for the treatment, in particular the dyeing of textile pieces. Prior to their treatment, it is usual to assemble textile pieces whose size is on average about the order of 50 meters by fine coutu-10 res to obtain strips whose length can be of the order of one kilometer At the time of their introduction into the treatment device such strips are closed on them- Even in a loop by a coarser seam. During the treatment, especially the dyeing, these loops are rotated continuously, in an endless movement, in a treatment tank which comprises, on the one hand, its lower part a U-shaped storage channel in which the loop se collects by forming folds and whose cup-shaped bottom receives a treatment bath, including a dye bath, and other at its upper part, drive means capable of lifting the textile parts in the storage channel and controlling the rotation of the loop in

an essentially vertical plane.

  Given the importance of its length,

  loop training poses particular problems

  delicate processes, especially during the dyeing process using short-bath dyeing baths indeed, to obtain satisfactory results, associated with the treatment time, it is necessary to circulate the textile product to a

relatively high speed.

  This implies that there are a number of problems related in particular to color uniformity or reproducibility, water consumption or dimensional stability.

  textile parts finally obtained after treatment

is lying.

  This last problem is particularly

  of, and one frequently observes a physical phenomenon of traction of the textile products in the direction of their length, which is evidently harmful to the

  good quality of the final product and leads to

  intolerable to washing at the consumer's

tor.

  The only way that has been proposed until

  to remove this handicap is to

  special machines to be compacted, re-

  lax or shrink which are very expensive and do not allow

  partially correcting the stability defects caused upstream by the

treatment or dyeing.

  The object of the present invention is to

  to this disadvantage in the treatment itself.

  same and not downstream thereof by means of a device which is distinguished from the usual processing devices

  that by the particular configuration of the means of

dragging.

  According to the invention, this device is characterized in that the drive means

  are formed, in the direction of rotation of the

  key, by first driving

  the circulation of the textile parts at a first speed, and second drive members controlling the circulation of the textile parts at a second speed lower than the first, the first and second drive members being separated

  by an accumulation chamber of the loop.

  It is essential, in accordance with the

  that the second speed is lower than the first

  in order to create, at the level of the

  cumulation, a phenomenon of "overstocking" whose consequence is to tighten the meshes of the parts

  textiles in the sense of height.

  According to another characteristic of the invention

  the first training

  killed by a suction tube of the Venturi effect bath cooperating with a feed tube of the accumulation chamber.

  According to another characteristic of the invention

  the second driving members are

  killed by a pair of paddle rotors.

  These can advantageously have

  a configuration similar to that described in the

  FR 82 14 615, and in particular be constituted by a central core provided, on its edge, blades whose

  adjacent part of the outer edge is rigid.

  In accordance with the above configuration

  born, the loop of textile material is sucked by the Venturi tube to the accumulation chamber,

  in which, as a result of the difference in

  her, she is compressed before being trained again

  born in the V defined by a part of the circumference

  this two rotor blades which are arranged in

  conce. To obtain an optimal result from the point of

  dimensional stability of the final products

  obtained, it is essential, in accordance with another characteristic of the invention, to be able to

  vary the first training speed and / or

  conde drive speed, ie the suction speed in the Venturi tube and / or the speed of rotation of the paddle rotors according to the various

  treatment parameters such as the materials to be treated

  ter, the speed of the rising curve of

rants

  Moreover, and always with the aim of

  to achieve an optimal result, it is essential that the organs, placed downstream of the loop accumulation chamber, respect the good presentation of the

  For this purpose and according to another

  feature of the invention, the second members

  driving forces cooperate with blooming

  particularly consisting of a set of transverse jets.

  For the same purpose, and according to another

  feature of the invention, the inner walls of the

  storage are coated with an anti-

  adhesive, especially Teflon (trademark) so

  to improve the sliding of the textile pieces.

  The characteristics of the device which is the subject of the invention will be described in more detail with the aid of the attached drawings in which: FIG. 1 is a diagram representing the

device according to the invention.

  FIGS. 2A, 2B, 2C represent

  respectively an unbleached mesh, a poorly treated mesh and a mesh better treated; on these three figures, there is exaggeration in the form of the stitches for good

show their differences.

  According to Figure 1, the device is intended to perform the dyeing of textile parts assembled to each other by fine seams not shown and closed in a loop 1 by a seam 2 coarser The textile material is introduced by

the window 16.

  The device is schematically constituted by a treatment tank 3 in which the loop 1

  turns continuously according to an endless movement schematic

  This vessel has at its lower part a U-shaped storage channel 4 in which the loop 1 collects to form folds 5 and whose bottom 6 in the form of a bowl receives a bath

  dyeing not shown in the figure.

  The upper part of the tank 3 is equi-

  means of training capable of raising

  textile parts in the storage channel

  kage 4 and to control the rotation of loop 1 se-

  arrow A in a substantially vertical plane.

  According to Figure 1 these drive means are constituted in the direction of rotation of the loop

  1, by a suction tube with Venturi effect 8

  the circulation of loop 1 to a first vi-

  speed, and by a pair of paddle rotors 9, 9 'available

  staggered and defining between them a channel 10

passage of textile pieces.

  The suction tube 8 with Venturi effect is fed by the pressurized bath as represented by the arrow B and cooperates with a feed tube

  11 opening into an accumulation chamber 12,

  killed directly upstream of the paddle rotors 9, 9 ', and in which, in view of the difference in speed

  above mentioned, there is a phenomenon of

  ge "textile pieces resulting in a res-

  squeeze their stitches in the direction of the height.

  At the outlet of the accumulation chamber 12, the loop 1 is introduced into the V-shaped space 13 defined between the paddle rotors 9, 9 'at the inlet

  of channel 10 then is liberated with energy and

  most of the treatment bath

  it was soaked, paddle rotors 9, 9 '

then carrying as a pump.

  In order that the aforementioned operation can be carried out uniformly and satisfactorily so as to guarantee the dimensional stability of the textile parts, it is essential that the loop 1 is correctly positioned both downstream of the rotors.

  vane 9, 9 'that upstream of the suction tube 8 to ef-

Venturi fet.

  For this purpose, a set of transverse jets

  14, whose function is to open up, unravel and unfold the textile pieces at this level.

  at the outlet of the paddle rotors 9, 9 '.

  In addition, and to promote the sliding of the loop 1 in the storage channel 4, the inner walls thereof are coated with a sliding coating 15 including Teflon (registered trademark) This coating 15 is schematized by a dotted line

in Figure 1.

  Adjusters not shown

  vary the speed of movement of the strip 1 at the outlet of the suction tube 8 with the Venturi effect and the speed of rotation of the paddle rotors 9, 9 'as a function of the treatment parameters (material to be treated, speed of the climb curve

dyes).

  According to FIGS. 2A, 2B and 2C, it is easy to check the effectiveness of the device according to the invention. For this purpose, it is necessary to identify, before treatment, a sample of unbleached fabric of length equal to one meter ( whose mesh is

  represented in FIG. 2A). After dyeing, the length

  of this sample must correspond to Figure 2 A or 2 C and be equal to or less than

  case of ill-treatment, the sample takes a

  lure corresponding to Figure 2 B, and has a length

greater than one meter.

Claims (1)

R E V E N D I C A T IO N S   ) Device for the treatment, in particular the dyeing of textile pieces joined together by sewing and   closed on themselves in a loop (1), in such a way   re to guarantee a better dimensional stability of these parts, device constituted by a treatment tank (3) in which the loop (1) rotates continuously, in an endless movement, and which comprises,   on the one hand, at its lower part a storage channel   U-shaped ge (4) in which the loop (1)   seems to form folds (5), and whose bottom in   cup shape (6) receives a treatment bath,   including a dye bath, and on the other hand,   upper part, drive means (7)   able to pick up the textile pieces lying   in the storage channel (4) and to control the rota-   the loop (1) in a substantially vertical plane, characterized in that the drive means (7) consist, in the direction of rotation A of the loop (1), by first members   (8) controlling the circulation of the   these textiles at a first speed, and by se-   conds driving members (9, 9 ') controlling the circulation of textile parts at a second speed, lower than the first, the first and second drive members (8, 9, 9') being separated by   an accumulation chamber (12) of the loop (1).   Device according to claim 1,   characterized in that the first training   are constituted by a suction tube (8) with Venturi effect cooperating with a feed tube   (11) of the accumulation chamber (12).   ) Device according to any one of   1 and 2, characterized in that the se-   conds drive members are constituted by a pair of paddle rotors (9, 9 ').   ) Device according to any one of   claims 1 to 3, characterized in that the first   re drive speed and / or the second drive speed is (are) adjustable (s). ) Device according to any one of   Claims 1 to 4, characterized in that the walls   internal storage channel are coated with a coating   (15), in particular Teflon (a mark de- asked).   ) Device according to any one of   Claims 1 to 5, characterized in that the   conds driving members (9, 9 ') cooperate with expansion members, in particular constituted by   a set of transverse jets (14).